Social media mental health warnings will erode civil liberties
If lawmakers get their way, social media users will see warnings about the potential toll their scrolling could be taking on their mental health.Elizabeth Nolan Brown (Reason.com)
Protesters rally against closure of largest gender-affirming care center for kids in the US
https://apnews.com/article/la-trans-youth-center-closing-34d27684692c95b4f7c3266c55a71d38?utm_source=flipboard&utm_medium=activitypub
Posted into Health @health-AssociatedPress
The Ensemble Spirit of Musicke performs Leonarda, von Bayreuth and more in Salzburg - Schedule // - www.worldconcerthall.com
The Ensemble Spirit of Musicke performs sonatas by Mrs. Philharmonica, Isabella Leonarda, Anna Bon Di Venezia, Wilhelmine von Bayreuth, Elisabeth Jacquet de la Guerre and Marianna Martinez. Recorded 6 June....www.worldconcerthall.com
@palestine @lebanon @yemen @irannachrichten #SettlerColonialism
#AntiImperialism #tiktok #cdnpoli
#antiPalestinianracism #canada #usa #yemen
@blackmastodon #freePalestine #GazaGenocide #IsraelTerroristState #StopGenocide
#palestina #StopAIPAC #IDFTerrorists #DismantleZionism
Jannik Sinner è in semifinale a Wimbledon - Il Post
https://www.ilpost.it/2025/07/09/quarti-di-finale-wimbledon-sinner-cobolli-risultati/?utm_source=flipboard&utm_medium=activitypub
Pubblicato su News @news-ilPost
Jannik Sinner è in semifinale a Wimbledon
Ha battuto Ben Shelton in tre set e venerdì affronterà uno tra Novak Djokovic e Flavio Cobolli, che stanno ancora giocandoIl Post
News reshared this.
Die Komödie „Es geschah in einer Nacht“ (1934 u.a. mit Clark Gable) gilt als einer d besten (5 Oscars) u einflussreichsten Filme aller Zeiten. Gable kaut darin bspw auf Karotten herum und spricht mit vollem Mund. Dies inspirierte die Väter von Bugs Bunny
@LuisCrespo If you haven't yet read it, check out the short story "Radicalized - A short story about health care, and desperation by Cory Doctorow" @pluralistic
#photography #photo #photos #passiflora #passifloracaerulea #passionflower #passionflowers #nature #flowers #blueflower #blueflowers
Roland Häder🇩🇪 likes this.
Evening Post, le storie di oggi - Il Post
https://www.ilpost.it/newsletter/cc99db2ccbfc858603a6af8b59ce9123/?utm_source=flipboard&utm_medium=activitypub
Pubblicato su News @news-ilPost
Evening Post, le storie di oggi - Il Post
Gli articoli, le rassegne, i blog, le foto, tutto quello che arriva dal mondo e dalla rete.il Post
News reshared this.
@palestine @lebanon @yemen @irannachrichten #SettlerColonialism
#AntiImperialism #tiktok #cdnpoli
#antiPalestinianracism #canada #usa #yemen
@blackmastodon #freePalestine #GazaGenocide #IsraelTerroristState #StopGenocide
#palestina #StopAIPAC #IDFTerrorists #DismantleZionism
non dormire od alzarsi, codesto è il perenne dilemma
Tra ieri sera e stamattina, rispettivamente al posto di prendere per bene sonno e di riuscire ad alzarmi dal letto, non ho potuto fare a meno di crogiolarmi dolorosamente in un tremendo interrogativo, naturalmente e casualmente diviso in queste due parti atomiche… Come cazzo è mai possibile che alla notte faccio fatica a decidermi di […]
Is Paul McCartney Announcing a Tour? Signs Point to Yes
https://www.rollingstone.com/music/music-news/paul-mccartney-hints-us-tour-2025-1235381721/?utm_source=flipboard&utm_medium=activitypub
Posted into Music News @music-news-RollingStone
Paul McCartney Tour: Singer Teases New Project on Social Media
Paul McCartney has appeared to hint at an upcoming 2025 U.S. tour on his Instagram stories on Wednesday.Althea Legaspi (Rolling Stone)
Vannacci sfodera sessismo e body shaming per insultare Carola Rackete
È incredibile come il generale Roberto Vannacci riesca a risultare osceno in ogni sua affermazione.Gayburg
Gazzetta del Cadavere reshared this.
Merz, Macron Eye Meeting to Resolve Growing Fighter Jet Rift
German Chancellor Friedrich Merz and French President Emmanuel Macron will seek to quell a growing Franco-German squabble over the countries’ next-generation fighter jet when they meet for high-profile consultations in Berlin this month.
Finanzamt Stuttgart II schuldet "Querdenker" Ballweg 200.000 Euro
Michael Ballweg hat keine Steuerschulden: Vielmehr schuldet ihm das Finanzamt ganze 200.000 Euro. Das kam nun heraus, nachdem ein Gericht angeordnet hatte, dass das Finanzamt endlich eine Berechnung der Steuerschuld für das Jahr 2020 vorlegen solle.Fritz Goergen (Tichys Einblick)
Roland Häder🇩🇪 likes this.
How to add images to your Medium story - The Medium Handbook - Medium
Images can act as the windows to the soul of your story to entice the right reader to click and read your story. In this story, I’ll walk you through how and why to add images, as well as where to…Zulie @ Medium (The Medium Handbook)
Reseña de «Arboreto sonoro» (3 estrellas): Axuda para miopes
prosa poética acompañada de ilustracións e composicións fotográficas que aluden aos textos.
Fáltame vocabulario para apreciar os textos como probablemente merecen, pero si logran transmitir(me) o respecto, admiración e humildade que o autor profesa ante a Natureza.
Ésta preséntase en calquera lugar, mesmo nas nosas cidades, onde facemos todo o posible para ocultala e destruír os seus ritmos. Para as que somos curtas de vista este libro pode ser unha guía que traia a Natureza omnipresente á distancia do brazo. Ou do móbil.
Con persoas, árbores, paxaros,… establece un vínculo que nos une a todas.
O libro non precisa ser lido dun xeito contínuo, podes, simplemente, deixar que un breve relato ou descrición te achegue ao sentir do autor.
Rivolta in carcere minori, nove condanne per oltre 35 anni - Notizie - Ansa.it
È terminato con nove condanne, la più alte delle quali a quattro anni e otto mesi, il processo per una rivolta che ai primi di agosto del 2024 scoppiò nel carcere minorile di Torino. In totale sono stati inflitti oltre 35 anni di reclusione. (ANSA)Agenzia ANSA
la_r_go* reshared this.
@palestine @lebanon @yemen @irannachrichten #SettlerColonialism
#AntiImperialism #tiktok #cdnpoli
#antiPalestinianracism #canada #usa #yemen
@blackmastodon #freePalestine #GazaGenocide #IsraelTerroristState #StopGenocide
#palestina #StopAIPAC #IDFTerrorists #DismantleZionism
FREE🇵🇸PALESTINE, CRUSH ZIONISM reshared this.
go.squidapp.co/n/imDy7uz
“Maiori jazz & More” ritorna il 12 luglio. Respiro internazionale per la rassegna che apre con Jumaane Smith
Sarà la tromba di Jumaane Smith ad aprire la nuova edizione di Maiori jazz & More, la rassegna musicale promossa dal Comune di MaioriRedazione Web (Amalfi Notizie)
I monitor live streams of political events to post real-time clips like 👆 using @snapstreamlive, the premier tool for social media video. If your company or org wants to learn more, click the link below for info and to set up a demo.
go.snapstream.com/affiliate/pu…
Aaron gets clips with SnapStream to make moments that matter
Record live TV to get clips and make moments that engage your audiences, grow your impact, and amplify your brand.go.snapstream.com
I just got home, fresh out of the shower, and now I’m sitting at my computer desk. 🏠🚿💻
My hair is a bit messy, but somehow you all still love it! And yes, that’s a Debian T-shirt. 💇♂️❤️
If you wonder, Debian is a free Linux operating system. 🐧
Wishing you a wonderful Wednesday evening! 🌆😊✨
#Wednesday #Evening #Shower #Relaxing #Linux #Debian #Hairstyle #Hair
Renzi: “Pier Silvio Berlusconi difende Meloni e attacca me, lascio Mondadori”
https://www.repubblica.it/politica/2025/07/09/news/renzi_lascia_mondadori_attacco_pier_silvio-424721246/?utm_source=flipboard&utm_medium=activitypub
Pubblicato su Politica - la Repubblica @politica-la-repubblica-repubblica
Renzi: “Pier Silvio Berlusconi difende Meloni e attacca me, lascio Mondadori”
Il leader di Italia Viva lo scrive in un post sui socialla Repubblica
@classicalmusic
Louise Farrenc - Piano Quintet No. 1, Op. 30
Ensemble Louise Farrenc
Mayumi Kanagawa - Violin
Klaus Christa - Viola
Mathias Johansen - Cello
Dominik Wagner - Doublebass
Katya Apekisheva - Piano
youtube.com/watch?v=bxNQnsnrhE…
- YouTube
Profitez des vidéos et de la musique que vous aimez, mettez en ligne des contenus originaux, et partagez-les avec vos amis, vos proches et le monde entier.www.youtube.com
L'immagine mostra un'orchestra classica in un teatro elegante, con un'architettura riccamente decorata. Al centro del palco, un direttore d'orchestra in abito scuro conduce l'esecuzione, mentre una cantante in un abito lungo e scintillante di colore marrone si esibisce. L'orchestra è composta da musicisti seduti su seggioline rosse, con strumenti come violini, violoncelli e altri archi. Sullo sfondo, si possono vedere archi decorati e lampadari, tipici di un teatro storico. La scena è illuminata da luci calde, creando un'atmosfera solenne e raffinata.
―
L'immagine mostra l'interno di un teatro elegante e riccamente decorato. La struttura presenta un'architettura classica con archi e colonne dorati, e un soffitto decorato con affreschi. Le gradinate sono rivestite di velluto rosso, con file di sedie vuote che si estendono fino al palco. Il palco è ampio e appare preparato per un'orchestra, con strumenti musicali come violoncelli e violini disposti in file ordinate. Sullo sfondo, una grande tenda rossa con un ricco bordo dorato e un affresco che raffigura un personaggio mitologico con un trombone. L'atmosfera è di attesa, con alcuni individui che si muovono sul palco, probabilmente orchestrale. La luce è soffusa, accentuando la grandiosità dell'ambiente.
―
L'immagine mostra un'orchestra in un teatro elegante e riccamente decorato. La scena è illuminata da luci calde che mettono in risalto l'architettura dorata e i dettagli intricati del palcoscenico e delle balconate. L'orchestra è composta da numerosi musicisti, tutti vestiti in abiti formali, che suonano strumenti classici come violini, violoncelli e flauti. Al centro del palco, un direttore d'orchestra conduce la performance, mentre un cantante si esibisce su un piccolo palco rosso. Sullo sfondo, una grande tenda rossa con un ricco bordo dorato e un dipinto storico o mitologico decorano lo sfondo del palco. Le balconate sono vuote, con alcune persone che osservano l'evento. L'atmosfera è solenne e culturale, tipica di un concerto di alta classe.
―
L'immagine mostra l'interno di un teatro elegante e riccamente decorato, con un'architettura barocca. Le gallerie sono adornate con archi dorati e sedie rosse, creando un'atmosfera di lusso e grandiosità. Sul palco, un'orchestra composta da numerosi musicisti è pronta per un'esibizione, con strumenti come violini, violoncelli e altri strumenti classici. Sullo sfondo, una grande tenda rossa con un ricco bordo dorato e un dipinto che raffigura una figura mitologica. Le luci del teatro sono accese, illuminando l'ambiente e creando un'atmosfera accogliente. Alcuni spettatori sono seduti nelle gallerie, mentre altri si trovano in piedi, conversando. L'immagine cattura l'essenza di un evento culturale di alto livello, con un'atmosfera di attesa e anticipazione.
Fornito da @altbot, generato localmente e privatamente utilizzando Ovis2-8B
🌱 Energia utilizzata: 3.575 Wh
Grazie alla vita per la voce di Mercedes Sosa | il manifesto
ilmanifesto.it/grazie-alla-vit…
> America latina (Commenti) Dalle montagne di Tucumán al porto di Buenos Aires, dalla Quebrada de Humahuaca alle pianure venezuelane e colombiane, dai ghiacciai della Patagonia alle cascate di Iguazú, dalle miniere boliviane di Potosí alla Pampa umida, dalla cordigliera delle Ande alle scogliere pacifiche e alle spiagge atlantiche, dal Santuario della farfalla monarca di Michoacán alla Terra del
Grazie alla vita per la voce di Mercedes Sosa | il manifesto
America latina (Commenti) Dalle montagne di Tucumán al porto di Buenos Aires, dalla Quebrada de Humahuaca alle pianure venezuelane e colombiane, dai ghiacciai della Patagonia alle cascate di Iguazú, dalle miniere boliviane di Potosí alla Pampa umida,…Marco Boccitto (il manifesto)
Gianmarco Gargiulo reshared this.
Hello @GrapheneOS
I am considering buying a pixel 9 and install GrapheneOS, for privacy.
I believe also that Braxman is scummer although when I watched his videos I almost get convinced. Have you considered to argument back on those accusations in order to dissolve his arguments?
For example, watching some of his videos I have the following concerns:
[to be continiued in next comment]
> Have you considered to argument back on those accusations in order to dissolve his arguments?
We've debunked his claims about GrapheneOS multiple times. He publishes inaccurate privacy content filled with fabrications for a living and we do not have time to go through all of his content and find all of the places he lies about GrapheneOS, let alone responding to all of it.
Many privacy and security experts have debunked his claims and exposed him as a charlatan already.
-Why Pixel? Just because of TM2 chip? As Braxman claim, is there any chip on harware that can identify you to Google?
- Why you choose Vanadium as secure browsing? Vanadium is a chronium variant, which chronium is developed by google. Why don''t you prefer duckduckgo browser for example?
For now These are my questions, and may come up more. Nowadays internet is full of "experts" and you don't know who is telling the truth
As community I believe you should argument back with technical details!
> Why Pixel? Just because of TM2 chip?
They're the only devices meeting our security and update requirements. See grapheneos.org/faq#future-devi…. There's a requirement for a decent secure element with the AOSP APIs, not the Titan M2.
> As Braxman claim, is there any chip on harware that can identify you to Google?
No, it's a fabrication.
> Why you choose Vanadium as secure browsing?
It's our privacy and security hardened browser project based on the most secure mainstream browser.
GrapheneOS Frequently Asked Questions
Answers to frequently asked questions about GrapheneOS.GrapheneOS
> Vanadium is a chronium variant, which chronium is developed by google.
Irrelevant.
> Why don''t you prefer duckduckgo browser for example?
DuckDuckGo's Android browser app is a WebView-based browser which means it's a Chromium-based browser. However, it has crippled privacy and security compared to a proper Chromium-based browser. WebView isn't meant for a fully featured browser app including not having per-site isolation yet and being missing important privacy features.
> Nowadays internet is full of "experts" and you don't know who is telling the truth
Braxman is quite obviously a charlatan and widely exposed as such by actual experts.
> you should argument back with technical details
We provide an enormous amount of technical details. What we don't do is spend a large amount of time watching and responding to a serial fabricator attacking us every day.
If you want to participate in our community, stop peddling false attacks on GrapheneOS.
non dormire od alzarsi, codesto è il perenne dilemma
Tra ieri sera e stamattina, rispettivamente al posto di prendere per bene sonno e di riuscire ad alzarmi dal letto, non ho potuto fare a meno di crogiolarmi dolorosamente in un tremendo interrogativo, naturalmente e casualmente diviso in queste due parti atomiche… Come cazzo è mai possibile che alla notte faccio fatica a decidermi di andare a dormire, e invece alla mattina proprio non riesco ad alzarmi? E questo è a tutti gli effetti uno di quei dubbi di valenza universale a cui è impossibile trovare una vera risposta, completa e soddisfacente… ma, almeno nel possibile, io esigo spiegazioni. (E fallisco nel trovarle.) 💔
In questo stato della notte, avrei voluto chiedere a ChatGPT “come dormire per sempre“, ma essendo già a letto da un pezzo non avrei sopportato l’aggressione ai miei sensori ottici da parte delle radiazioni ad alta frequenza degli schermi LCD, quindi a malincuore (ossia, con la conseguenza di finire ancora più incazzata, e quindi accumulare ancora più stress, quindi finendo per avere ancora più difficoltà ad addormentarmi) ho rinunciato. Però, adesso, ho potuto almeno rigirargli questa poco più generalizzata domanda, che tocca i due punti del ciclo di distruzione della mia anima tra la notte e il mezzogiorno… e, ovviamente, i muri di testo che ha sputato fuori sono solo sloppa insoddisfacente; non so davvero perché continuo ad aspettarmi qualcosa di più dal parlare con questi modelli di cagaggio. 😾
A parte il memaggio, il fatto è molto strano. In teoria, le condizioni sono tali che dovrebbe sempre andare tutto in perfetto ordine: non procrastinare il posare tutto e mettersi a letto la sera, non avere la testa straripante dei pensieri più misti nel momento in cui devo prendere sonno, e la mattina svegliarmi ad un orario umano e più o meno solito, senza rimanere fino ad una intera ora o quasi a lettomarcire per mancanza di forze nonostante l’aver dormito abbastanza e decentemente. Cioè, non c’è proprio motivo logico per cui io la sera non sento di voler andare a dormire, e la mattina non sento di dovermi alzare… quando la mattina posso fare tranquillamente tutte le cose della sera (e anzi, anche meglio, perché fa meno caldo), e viceversa la sera non ho cose da fare in meno della mattina (colazione a parte… e pensare che la mattina ci sta anche il coffi, ma niente, preferisco il letto a quell’ora). Eppure, la realtà è esattamente questo schifo qua. 💥
“Lasciate ogne speranza, voi ch’intrate“, c’era scritto davanti alle porte dell’Inferno… e tale e quale dovrebbe essere scritto ai piedi del lettino (…o forse sul lato, altrimenti non si vede quando ci si immerge in esso), che così almeno la sera mi ricordo di che morte devo morire. Non si può dormire in pace, e non ci si può svegliare se non con nostalgia, e ogni giorno il ciclo si ripete, con le promesse e le ispirazioni della mattina che non durano fino a sera senza decomporsi permanentemente, e i propositi e i desideri della notte che la mattina non valgono più niente. Mi chiedo se mai riuscirò a rompere questa maledizione, molto perniciosa e ancora incompresa, nonostante attanaglia buona parte del genere umano… ma penso seriamente che l’unica soluzione per me sarebbe avere una routine di sonno e sveglia attiva 24/7, a tempo indeterminato (infinito), ovviamente dettata da fattori esterni (per esempio, orari di lavoro), altrimenti non posso fattualmente rispettarla (ops). (Oppure, appunto, datemi un modo per semplicemente dormire per sempre e la finisco qui, ve ne sarei eternamente grata.) ⚱️Sul serio, comunque, io proprio non capisco. La sera voglio fare le cose, e la mattina alle 11 suonate voglio semplicemente rimanere ancora nel letto, a fare niente se non cliccare OFF sulla sveglia quando suona. Ma come cazzo si fa!!! Ho 3 neuroni di numero e questi non riescono a mettersi d’accordo su qualcosa di così scemo!!! BASTA!!! 😭
#bedrotting #dormire #girlrotting #rotting #rottingcore #sleep #sonno
Il blogverso italiano di Wordpress reshared this.
Volete passare 5 giorni a Gran Canaria?
Vi diamo qualche idea su cosa fare tra mare, spiagge paradisiache ed entroterra!
#giroviaggiare #grancanaria #canarie #spagna #maspalomas #roquenublo #playadeamadores #anfidelmar #photography #photo
Ja, aber China. Ja, aber wir machen ja schon. Ja, aber man muss ja auch mal realistisch sein. Ja, aber alleine retten wir das Klima auch nicht.
Friedrich Merz bedient bei der Generaldebatte einmal das klimapoltische Bullshit-Bingo von vorne bis hinten.
Lord Caramac the Clueless, KSC reshared this.
Dithering With Quantization to Smooth Things Over
It should probably come as no surprise to anyone that the images which we look at every day – whether printed or on a display – are simply illusions. That cat picture isn’t actually a cat, but rather a collection of dots that when looked at from far enough away tricks our brain into thinking that we are indeed looking at a two-dimensional cat and happily fills in the blanks. These dots can use the full CMYK color model for prints, RGB(A) for digital images or a limited color space including greyscale.
Perhaps more interesting is the use of dithering to further trick the mind into seeing things that aren’t truly there by adding noise. Simply put, dithering is the process of adding noise to reduce quantization error, which in images shows up as artefacts like color banding. Within the field of digital audio dithering is also used, for similar reasons. Part of the process of going from an analog signal to a digital one involves throwing away data that falls outside the sampling rate and quantization depth.
By adding dithering noise these quantization errors are smoothed out, with the final effect depending on the dithering algorithm used.
The Digital Era
Plot of a quantized signal and its error. (Source: Wikimedia)
For most of history, humanity’s methods of visual-auditory recording and reproduction were analog, starting with methods like drawing and painting. Until fairly recently reproducing music required you to assemble skilled artists, until the arrival of analog recording and playback technologies. Then suddenly, with the rise of computer technology in the second half of the 20th century we gained the ability to not only perform analog-to-digital conversion, but also store the resulting digital format in a way that promised near-perfect reproduction.
Digital optical discs and tapes found themselves competing with analog formats like the compact cassette and vinyl records. While video and photos remained analog for a long time in the form of VHS tapes and film, eventually these all gave way to the fully digital world of digital cameras, JPEGs, PNGs, DVDs and MPEG. Despite the theoretical pixel- and note-perfect reproduction of digital formats, considerations like sampling speed (Nyquist frequency) and the aforementioned quantization errors mean a range of new headaches to address.
That said, the first use of dithering was actually in the 19th century, when newspapers and other printed media were looking to print phots without the hassle of having a woodcut or engraving made. This led to the invention of halftone printing.
Polka Dots
Left: halftone dot pattern with increasing size downwards, Right: how the human eye would see this, when viewed from a sufficient distance. (Source: Wikimedia)
With early printing methods, illustrations were limited to an all-or-nothing approach with their ink coverage. This obviously meant serious limitations when it came to more detailed illustrations and photographs, until the arrival of the halftone printing method. First patented in 1852 by William Fox Talbot, his approach used a special screen to break down an image into discrete points on a photographic plate. After developing this into a printing plate, these plates would then print this pattern of differently sized points.
Although the exact halftone printing methods were refined over the following decades, the basic principle remains the same to this day: by varying the size of the dot and the surrounding empty (white) space, the perceived brightness changes. When this method got extended to color prints with the CMYK color model, the resulting printing of these three colors as adjoining dots allowed for full-color photographs to be printed in newspapers and magazines despite having only so few ink colors available.
While it’s also possible to do CMYK printing with blending of the inks, as in e.g. inkjet printers, this comes with some disadvantages especially when printing on thin, low-quality paper, such as that used for newspapers, as the ink saturation can cause the paper to rip and distort. This makes CMYK and monochrome dithering still a popular technique for newspapers and similar low-fidelity applications.
Color Palettes
In an ideal world, every image would have an unlimited color depth. Unfortunately we sometimes have to adapt to a narrower color space, such as when converting to the Graphics Interchange Format (GIF), which is limited to 8 bits per pixel. This 1987-era and still very popular format thus provides an astounding 256 possible colors -albeit from a full 24-bit color space – which poses a bit of a challenge when using a 24-bit PNG or similar format as the source. Simply reducing the bit depth causes horrible color banding, which means that we should use dithering to ease these sharp transitions, like the very common Floyd-Steinberg dithering algorithm:From left to right: original image. Converted to web safe color. Web safe with Floyd-Steinberg dithering. (Source: Wikipedia)
The Floyd-Steinberg dithering algorithm was created in 1976 by Robert W. Floyd and Louis Steinberg. Its approach to dithering is based on error diffusion, meaning that it takes the quantization error that causes the sharp banding and distributes it across neighboring pixels. This way transitions are less abrupt, even if it means that there is noticeable image degradation (i.e. noise) compared to the original.
This algorithm is quite straightforward, working its way down the image one pixel at a time without affecting previously processed pixels. After obtaining the current pixel’s quantization error, this is distributed across the subsequent pixels following and below the current one, as in the below pseudo code:
for each y from top to bottom do
for each x from left to right do
oldpixel := pixels[x]
[y] newpixel := find_closest_palette_color(oldpixel)
pixels[x][y] := newpixel
quant_error := oldpixel - newpixel
pixels[x + 1][y ] := pixels[x + 1][y ] + quant_error × 7 / 16
pixels[x - 1][y + 1] := pixels[x - 1][y + 1] + quant_error × 3 / 16
pixels[x ][y + 1] := pixels[x ][y + 1] + quant_error × 5 / 16
pixels[x + 1][y + 1] := pixels[x + 1][y + 1] + quant_error × 1 / 16
The implementation of the find_closest_palette_color()
function is key here, with for a greyscale image a simple round(oldpixel / 255)
sufficing, or trunc(oldpixel + 0.5)
as suggested in this CS 559 course material from 2000 by the Universe of Wisconsin-Madison.
As basic as Floyd-Steinberg is, it’s still commonly used today due to the good results that it gives with fairly minimal effort. Which is not to say that there aren’t other dithering algorithms out there, with the Wikipedia entry on dithering helpfully pointing out a number of alternatives, both within the same error diffusion category as well as other categories like ordered dithering. In the case of ordered dithering there is a distinct crosshatch pattern that is both very recognizable and potentially off-putting.
Dithering is of course performed here to compensate for a lack of bit-depth, meaning that it will never look as good as the original image, but the less obnoxious the resulting artefacts are, the better.
Dithering With Audio
Although at first glance dithering with digital audio seems far removed from dithering the quantization error with images, the same principles apply here. When for example the original recording has to be downsampled to CD-quality (i.e. 16-bit) audio, we can either round or truncate the original samples to get the desired sample size, but we’d get distortion in either case. This distortion is highly noticeable by the human ear as the quantization errors create new frequencies and harmonics, this is quite noticeable in the 16- to 6-bit downsampling examples provided in the Wikipedia entry.
In the sample with dithering, there is clearly noise audible, but the original signal (a sine wave) now sounds pretty close to the original signal. This is done through the adding of random noise to each sample by randomly rounding up or down and counting on the average. Although random noise is clearly audible in the final result, it’s significantly better than the undithered version.
Random noise distribution is also possible with images, but more refined methods tend to give better results. For audio processing there are alternative noise distributions and noise shaping approaches.
Regardless of which dither method is being applied, it remains fascinating how the humble printing press and quantization errors have led to so many different ways to trick the human eye and ear into accepting lower fidelity content. As many of the technical limitations that existed during the time of their conception – such as expensive storage and low bandwidth – have now mostly vanished, it will be interesting to see how dithering usage evolves over the coming years and decades.
Featured image: “JJN Dithering” from [Tanner Helland]’s great dithering writeup.
linux-magazine.com/Online/News…
#Linux #kernel #bachefs #patches
Linux Kernel 6.17 Drops bcachefs » Linux Magazine
After a clash over some late fixes and disagreements between bcachefs's lead developer and Linus Torvalds, bachefs is out.Linux Magazine
Discover why Nextcloud is the go-to alternative to #BigTech for organizations prioritizing data sovereignty! 🚀
🔒 With Nextcloud, you maintain full control over your data while ensuring robust, stable, and feature-rich private cloud collaboration.
RealJournalism reshared this.
We spend a week with Volvo's three-row electric SUV.
arstechnica.com/cars/2025/07/2…
2025 Volvo EX90: A low-key luxury electric SUV
We spend a week with Volvo’s three-row electric SUV.Jonathan M. Gitlin (Ars Technica)
#bloomscrolling #flowerphotography #photography #nature #naturephotography #peace
In the same spirit, if you are interested in #reading #positive #stories, please see #solarpunk #novel at tinjar.ghost.io/a-new-faith
"A New Faith" is like a 7-layer #burrito that has #climatechange #adaptation #migration #geopolitics #bigotry #trauma #sacrifice all wrapped tightly into a #tortilla of #murder #mystery that is being solved by a dashing #detective who doesn't mind getting into #action
A New Faith
Part 1 is available for free to all - online or download in DRM-free EPUB/PDF formats.TinJar
Währenddessen könnt ihr ja schon mal gucken, was es neues gibt: blog.joinmastodon.org/2025/07/…
Mastodon 4.4
Improved profile features, enhanced list management, refreshed navigation, and the initial part of our Quote Posts implementation. All of these and more, in our latest release.Mastodon Blog
Today, the BDS movement — led by the largest Palestinian coalition ever — turns 20.
x.com/BDSmovement/status/19429…
#bds #boycott #Gaza #Palestine #Syria #iran #lebanon #Genocide #geopolitics
@palestine @lebanon @yemen @irannachrichten #SettlerColonialism
#AntiImperialism #tiktok #cdnpoli
#antiPalestinianracism #canada #usa #yemen
@blackmastodon #freePalestine #GazaGenocide #IsraelTerroristState #StopGenocide
#palestina #StopAIPAC #IDFTerrorists #DismantleZionism
🚨 In 48 hours, more than 25,000 people have rejected Annalena #Baerbock ’s UN General Assembly Presidency.
act.progressive.international/…
#eu #un #brussels #germany #LondonNews #uk #france #spain #ireland #Gaza #Palestine #Syria #iran #lebanon #Genocide #geopolitics
@palestine @lebanon @yemen @irannachrichten #tiktok #cdnpoli
##canada #usa #yemen
@blackmastodon #freePalestine #GazaGenocide #IsraelTerroristState #StopGenocide
#palestina #StopAIPAC #IDFTerrorists #DismantleZionism
Block Baerbock From the UN
Only a movement millions strong can stop Baerbock's presidency at the United Nations General Assembly.act.progressive.international
A New Faith
Part 1 is available for free to all - online or download in DRM-free EPUB/PDF formats.TinJar
Yes, #AlligatorAlcatraz is expanding—fast.
Florida’s taxpayer-funded, rights-shredding hellcamp is adding 500 beds at a time, aiming to cage up to 5,000 people by July.
Built under #DeSantis’ emergency powers, with zero oversight.
Share it. Call the inhumane MFers out.
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Peluche pagati e mai consegnati: scattano tre condanne
La vicenda giudiziaria è quella relativa agli Orsetti di Alice, l’azienda lucchese che produceva e vendeva copie in peluche degli animali domestici di cui i clienti inviavano le foto. Migliaia di euro di peluche pagati e mai arrivati. Dopo sette anni sono arrivare tre condanne per insolvenza fraudolenta e un'assoluzione.
Migration: Früher kamen auch echte Ingenieure
Als Student arbeitete ich in NRW in einem türkischen Reisebüro. Der Inhaber war der Prototyp eines Selfmade-Man: Als Gastarbeiter gekommen, leitete er außerdem die Ford-Motorenentwicklung in Köln und Essex, England. / Foto: Montage achgut.comwww.achgut.com
Roland Häder🇩🇪 likes this.
The post Umfrage: Friedrich Merz noch unbeliebter als Angela Merkel appeared first on Apollo News. #news #press
Umfrage: Friedrich Merz noch unbeliebter als Angela Merkel - Apollo News
Acht Wochen nach Amtsantritt von Friedrich Merz fällt das Urteil der Bevölkerung schlecht aus: Laut einer Insa-Umfrage bewerten 36 Prozent seine Arbeit als schlechter als die von Angela Merkel.Jonas Aston (Apollo News)
#linux #magazin #itprofessionell
How long until the book?
bbc.com/news/articles/cx2gy3j9…
Linda Yaccarino announces her departure from Musk's X
Her exit comes at a difficult time for Musk who, in a brief reply, thanked her for her "contributions."Graham Fraser & Zoe Kleinman (BBC News)
Untitled
Per la serie, due pesi due misure, Cristofobia allo stato puro QUESTA MATTINA SUL MURO DELLA CHIESA DEI DOMENICANI DI PERUGIA Sono le solite quattro lesbiche abortiste incattivite alla massima potenza. Se però avessero scritto: "fuori i gay", a quel punto Elly Schlein e Alessandro Zan avrebbero fatto una interpellanza parlamentare di fuoco. Ma d'altronde è risaputo: noi cattolici non apparteniamo alle specie protette, basti vedere ogni primo maggio che cosa ci…
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Alligator Atrocity
An American concentration camp became operational last week, and it’s already a human rights nightmare.Jay Kuo (The Status Kuo)
youtube.com/watch?v=VURaCGbzbP…
- YouTube
Profitez des vidéos et de la musique que vous aimez, mettez en ligne des contenus originaux, et partagez-les avec vos amis, vos proches et le monde entier.www.youtube.com
Sources: Apple is planning the first Vision Pro upgrade later in 2025, with an M4 chip and a new strap, and a lighter, redesigned version for 2027 (Mark Gurman/Bloomberg)
bloomberg.com/news/articles/20…
techmeme.com/250709/p34#a25070…
Sources: Apple is planning the first Vision Pro upgrade later in 2025, with an M4 chip and a new strap, and a lighter, redesigned version for 2027
By Mark Gurman / Bloomberg. View the full context on Techmeme.Techmeme
Mahler and Strauss with Blue from Copenhagen - Schedule // - www.worldconcerthall.com
Angel Blue, soprano, and the Tivoli Copenhagen Phil. conducted by Christoph Gedshold perform: MAHLER: Adagio from Symphony No. 10. STRAUSS: Vier Letzte Lieder/ Don Juan/ Selected songs. Recorded 3 July....www.worldconcerthall.com
BRICS expands to 56% of world population, 44% of global GDP: Vietnam joins as partner country - Geopolitical Economy Report
BRICS expanded to 20 countries, 10 members and 10 partners, adding Vietnam. BRICS+ makes up 44% of world GDP (PPP), 56% of global population.Ben Norton (Geopolitical Economy Report)
william.maggos
in reply to Elizabeth Nolan Brown • • •